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When we prepare a filesystem (once per
WasmModule
lifecycle), we pre-open the required file descriptors, and keep adding new ones as WASM code opens files.When
reset
-ing the module, we need to bring the filesystem back to the original state, as otherwise execution will fail. This includes clearing the existing filedescriptor map.I add a regression test that catches this for WAMR (this was not an issue for WAVM, I think because during reset we move back to the original cached module).
I was thinking of adding the regression test in the
test_file_descriptor.cpp
file, but then I decided against it. However, in the process I added a test fixture for that file.